WO2019095981A1 - Motor sealing structure and motor - Google Patents

Motor sealing structure and motor Download PDF

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Publication number
WO2019095981A1
WO2019095981A1 PCT/CN2018/112309 CN2018112309W WO2019095981A1 WO 2019095981 A1 WO2019095981 A1 WO 2019095981A1 CN 2018112309 W CN2018112309 W CN 2018112309W WO 2019095981 A1 WO2019095981 A1 WO 2019095981A1
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WO
WIPO (PCT)
Prior art keywords
bearing
rotating shaft
blade
boss
motor
Prior art date
Application number
PCT/CN2018/112309
Other languages
French (fr)
Chinese (zh)
Inventor
高峰
刘健宁
郑易
Original Assignee
珠海格力节能环保制冷技术研究中心有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 珠海格力节能环保制冷技术研究中心有限公司 filed Critical 珠海格力节能环保制冷技术研究中心有限公司
Priority to EP18878139.7A priority Critical patent/EP3672031B1/en
Priority to US16/755,103 priority patent/US11289968B2/en
Publication of WO2019095981A1 publication Critical patent/WO2019095981A1/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
    • H02K5/124—Sealing of shafts
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
    • H02K5/1735—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at only one end of the rotor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft

Definitions

  • the invention belongs to the technical field of motors, and in particular relates to a motor sealing structure and a motor.
  • Motors are used in almost all industries of modern society. Whether it is industrial, agricultural, transportation or family life, motors are inseparable. The use of motors is so wide that their protection levels are not the same. The motor realizes the conversion of electricity and mechanical energy, so when the motor is in open space, its own protection ability is particularly important.
  • the motor is mainly composed of the base (chassis), stator, rotor core, rotating shaft, bearing, end cover and other components.
  • the protection of the motor mainly refers to the space between the base (the casing) and the end cover, and the rotating shaft is to the outside or The sealing effect between the shaft and the bearing, between the bearing and the bearing chamber of the end cap.
  • the base (the casing) and the end cover are relatively stationary, and can be realized by pressure, or a built-in sealing ring, and adding a sealant.
  • felts, oil seals, labyrinths or extruded seals are generally used. These seals usually have the following problems:
  • the labyrinth type has a complicated sealing structure and is limited in use, and is only suitable for a certain speed;
  • the seal of the bearing housing of the end cover requires the outer ring of the bearing to be matched with the extrusion type sealing ring.
  • the bearing will be subjected to the shearing force of the inner and outer rings, which increases the pressure of the ball and the bracket of the bearing, which is easy to generate noise and affect the life of the bearing. ;
  • the present invention has devised a motor sealing structure and a motor.
  • the technical problem to be solved by the present invention is to overcome the defects in the prior art motor sealing structure, which seriously affect the performance of the motor and reduce the efficiency, thereby providing a motor sealing structure and a motor.
  • the invention provides a motor sealing structure, which comprises:
  • a bearing is sleeved on the rotating shaft, and a shoulder structure is further disposed along the axial direction of the rotating shaft at a position corresponding to the bearing on an outer peripheral wall of the rotating shaft, so that a part of the bearing Forming a cavity between the shoulder structures;
  • the blade structure is sleeved at one end of the rotating shaft and extends in the direction of the axis of the rotating shaft to the position of the bearing and enters the cavity.
  • the blade structure is inserted into a portion between the bearing and the rotating shaft and has a length in the axial direction of 1.5 mm to 5.0 mm.
  • the blade structure includes a blade boss and a blade, and the blade boss includes a blade boss hole, and the blade boss is sleeved at one end of the rotating shaft through the blade boss hole. The blade boss can be rotated by the rotating shaft.
  • a first flat structure is disposed on an outer circumference of the rotating shaft, and an inner flat wall of the air vane hole is provided with a second flat structure capable of matching the first flat structure of the rotating shaft.
  • the inner wall of the vane boss hole is further provided with a shoulder surface extending in the axial direction, and a shoulder corresponding to the outer peripheral surface of the rotating shaft is provided with a shoulder, the shoulder surface and the shoulder The mating can be matched to each other to complete the axial positioning between the rotating shaft and the vane boss.
  • a step is further provided on an outer peripheral surface of the end of the vane boss, the step being insertable into the cavity and axially restrained from the bearing.
  • the blade structure further includes a wheel disk, the wheel disk connection is disposed on a radially outer side of the blade boss, and the plurality of blades are disposed on the wheel disk and arranged along a circumferential direction thereof .
  • a reinforcing rib is further disposed on the wheel, and one end of the reinforcing rib is fixedly connected to an outer peripheral surface of the blade boss.
  • the reinforcing ribs are plural, the number of which corresponds to the number of the blades, and are arranged along the circumferential direction of the wheel.
  • An end cap is further included, the end cap including a first portion and a second portion that meet in the axial direction, the first portion is sleeved radially outward of the bearing, and the second portion is located radially outward of the shaft
  • the vane boss of the vane structure is inserted into a position between a radially inner side of the second portion of the end cap and a radially outer side of the rotating shaft.
  • the bearing when the blade boss is included, the bearing includes a bearing inner ring and a bearing outer ring, and an interference fit between the blade boss and the bearing inner ring,
  • the bearing includes a bearing inner ring and a bearing outer ring, and an interference fit between the bearing outer ring and the first portion of the end cap;
  • the shaft bearing comprises a bearing inner ring and a bearing outer ring, and the inner ring of the bearing and the rotating shaft are a transition fit or a clearance fit;
  • the bearing is a waterproof bearing
  • the material of the blade structure is made of plastic material.
  • the present invention also provides an electric machine including a rotor and a stator, which further includes the aforementioned motor sealing structure.
  • the motor sealing structure and the motor of the present invention are sleeved at one end of the rotating shaft through a blade structure, and extend to the position of the bearing along the axis of the rotating shaft, and are inserted into the radially inner side of the bearing,
  • the radial outer side of the rotating shaft can be sealed by the fan cooling fan, so that the blade structure is in contact with the inner ring of the bearing, and rotates synchronously with the inner ring of the bearing, without increasing the sealing member, preventing the shaft from directly contacting the sealing member, and not generating
  • the energy loss solves the problem of energy loss in the current common sealing method, ensures the performance of the motor, improves the efficiency, and has the advantages of simple structure and convenient assembly, and can be installed according to normal pressing; no other parts are added, and cost is saved.
  • FIG. 1 is a schematic perspective view showing the appearance of a motor of the present invention
  • Figure 2 is a cross-sectional view showing the motor sealing structure of the present invention
  • Figure 3 is a partial enlarged view of a portion A of Figure 2;
  • Figure 4 is a partial enlarged view of a portion B of Figure 3;
  • Figure 5a is a front perspective structural view of a first embodiment of the blade structure of the present invention.
  • Figure 5b is a rear perspective structural view of the first embodiment of the blade structure of the present invention.
  • Figure 5c is a front structural view showing the first embodiment of the blade structure of the present invention.
  • Figure 5d is a side cross-sectional structural view showing the first embodiment of the blade structure of the present invention.
  • Figure 6 is an assembled structural view of Embodiment 1 of the blade structure of the present invention.
  • Figure 7a is a front perspective structural view of a second embodiment of the blade structure of the present invention.
  • Figure 7b is a rear perspective structural view of Embodiment 2 of the blade structure of the present invention.
  • Figure 7c is a partially enlarged structural view of a portion C of Figure 7b;
  • Fig. 8 is an assembly structural view of a second embodiment of the blade structure of the present invention.
  • the present invention provides a motor sealing structure comprising:
  • a bearing 2 is sleeved on the rotating shaft 1, and a shoulder structure is further opened along the axial direction of the rotating shaft at a position corresponding to the bearing 2 on the outer peripheral wall of the rotating shaft 1, so that the bearing a portion of 2 and the shoulder structure between the formation of a cavity 4;
  • the blade structure 3 is sleeved at one end of the rotating shaft 1 and extends in the axial direction of the rotating shaft 1 to the position of the bearing 2, and is inserted into the cavity 4, that is, the radial direction of the bearing 2 The inner side and the radially outer position of the rotating shaft 1.
  • the invention utilizes a motor cooling fan to extend the fan boss to a certain distance from the inner ring of the bearing to prevent external water or dust from entering, that is, through the blade structure, is sleeved at one end of the rotating shaft and extends along the axis of the rotating shaft to The position of the bearing is inserted into the radially inner side of the bearing, and the radial outer side of the rotating shaft (ie, the cavity formed in the shaft shoulder structure and the bearing formed on the rotating shaft is inserted into the cavity formed by the bearing, as shown in FIG.
  • the shoulder structure extends to the leftmost position of the rightmost end of the bearing and does not extend to the leftmost end of the bearing, so that the left end of the bearing can cooperate with the rotating shaft to complete the supporting action, and the cavity is used for receiving
  • the blade structure is inserted and sealed), and the bearing between the bearing and the rotating shaft can be sealed by the original cooling blade of the motor, so that the blade structure is in contact with the inner ring of the bearing, and rotates synchronously with the inner ring of the bearing, without adding a seal,
  • the direct contact between the rotating shaft and the sealing member is prevented, energy loss is not generated, the problem of energy loss of the current common sealing method is solved, the performance of the motor is ensured, the efficiency is improved, and the structure is simple. Ease of assembly, press-fit to normal; no increase in the other parts, cost savings.
  • the blade sealing method adopted by the invention utilizes the blade boss (ie, the blade boss 31) to extend into the inner ring of the bearing at a certain distance, and the outer ring of the boss and the inner ring of the bearing have a transition or a small interference fit, and the outer ring of the bearing
  • the bearing chamber of the end cover is interference-fitted, and the bearing adopts waterproof bearing.
  • Figure 1 shows the shape of a typical three-phase asynchronous motor. During the operation of the motor, there will be various reactive losses. These losses will be converted into thermal energy. The blades at the rear of the motor rotate synchronously with the rotor, and the wind is generated along the machine. The cooling fins on the seat flow, taking away the heat dissipated inside the motor to achieve the effect of cooling the motor.
  • the length of the portion of the blade structure 3 that is inserted between the bearing 2 and the rotating shaft 1 in the axial direction is 1.5 mm - 5.0 mm (when the present invention is preferably directed to the 608 bearing, the length is preferably a value) 1.5mm).
  • the length of the penetration should take into account the effective contact area between the rotating shaft and the inner ring of the bearing, and is appropriately adjusted according to the size of the bearing. According to the invention, the distance is set to about 1.5 mm, which can effectively ensure the transmission of the torque, so that the bearing and the rotating shaft are effectively effective. Ground sealed.
  • the blade structure 3 includes a blade boss 31 and a blade 32.
  • the blade boss 31 includes a blade boss hole 310, and the blade boss 31 is sleeved through the blade boss hole 310.
  • the vane 32 can rotate as the vane boss 31 rotates.
  • This is a specific structural form of the blade structure in the sealing structure of the present invention.
  • the blade structure can be fixed on the rotating shaft by the blade boss, and the blade rotates as the blade boss rotates, so that the blade can be passed through the blade.
  • the rotation of the motor cools down the internal structure of the motor (including the rotor, stator, etc.).
  • FIG. 2 and 3 are the air blade sealing structure, and FIG. 2 is mainly the internal structure of the motor, including the fixed rotor core, the rotating shaft 1, the end cover 6, and the bearing 2.
  • the shaft 1 is in contact with the inner ring of the bearing through the shoulder to achieve axial limitation.
  • Figure 4 is a detail of the blade sealing structure.
  • the boss of the blade structure 3 (the blade boss 31) is directly extended to a distance from the inner ring of the bearing, and the outer ring of the boss and the inner ring of the bearing are designed to be transitional or small.
  • Cooperate so that the external water or dust can not enter from the inner ring of the bearing, and the bearing outer ring and the bearing inner ring of the end cover 6 are in an interference fit, water or dust can not pass through, for the convenience of assembly, the motor shaft outer ring and the bearing
  • the inner ring is designed for small clearance or transition fit, and the bearing is made of waterproof bearing.
  • a first flat structure is disposed on an outer circumference of the rotating shaft 1
  • a second flat structure capable of matching the first flat structure of the rotating shaft 1 is disposed on an inner wall of the air vane hole 310 311, the blade boss 31 can be rotated by the rotating shaft 1.
  • the vane boss can be matched with the rotating shaft by two flat structures and the circumferential direction of the two The limiting action is performed, so that when the rotating shaft rotates, the vane boss is driven to rotate synchronously with the rotating shaft, and the inner ring of the bearing also rotates synchronously with the rotating shaft, so that the rotating shaft and the bearing are sealed by the vane bosses, and The air volume is generated by rotation, and the inside of the motor is cooled and cooled.
  • the inner wall of the vane boss hole 310 is further provided with a shoulder surface 312 extending in the axial direction.
  • the outer peripheral surface of the rotating shaft 1 is provided with a shoulder 11 at a position corresponding to the outer peripheral surface, and the shoulder surface 312
  • the shoulders 11 can be mated with each other to complete the axial positioning between the rotating shaft 1 and the vane boss 31.
  • a step 313 is further provided on the outer peripheral surface of the end of the vane boss 31, and the step 313 can be inserted into the cavity 4 to complete axial restraint with the bearing 2.
  • the step can be inserted into the cavity, so that the sealing performance between the bearing and the rotating shaft is further enhanced, and further in the axial direction and the diameter
  • the positioning action in the direction makes the blade structure not easy to fall off after assembly, and the sealing performance is improved.
  • Figures 5a-5d and 7a-7c show two types of blade structures, wherein Figures 7a-7c are derived from the stepped structure 313 at the end of the blade boss 31, which can serve as a limit during the blade pressure.
  • Both inner blades of the wind blade have a flat structure, which matches the flat position of the rotating shaft, and the circumferential direction of the limiting blade rotates relative to the steering.
  • the blade structure 3 further includes a wheel 33 connected in a radial outer side of the blade boss 31, and a plurality of the blades 32 are disposed on the wheel 33 and along the same Arrange in the circumferential direction.
  • a rib 5 is further disposed on the wheel 33, and one end of the rib 5 is fixedly coupled to an outer peripheral surface of the blade boss 31.
  • the ribs 5 are plural, the number of which corresponds to the number of the blades, and are arranged along the circumferential direction of the wheel 33.
  • the plurality of reinforcing ribs can support the circumferential direction of the wheel to improve the structural strength of the overall support of the blade structure in the circumferential direction.
  • an end cap 6 including a first portion and a second portion that meet in the axial direction, a first portion being sleeved radially outward of the bearing 2 and a second portion being located at the shaft 1 Radial outer side (see Figure 2-4, the first part is the bearing chamber on the left side of the figure to support the bearing to enter, the second part is the end plate on the right side of the figure)
  • the vane boss 31 of the vane structure 3 is inserted into a position between a radially inner side of the second portion of the end cap 6 and a radially outer side of the rotating shaft 1.
  • a matching function can also be formed between the vane boss and the end cap in the blade structure, that is, the radial inner side of the end cap and the diameter of the rotating shaft
  • a sealing effect can be formed between the end cover and the rotating shaft, thereby improving the sealing effect between the end cover and the rotating shaft, and further improving the bearing.
  • the sealing effect with the shaft and also guarantees no loss of energy or minimal loss.
  • the inner wall of the blade boss hole 310 and the outer peripheral wall of the rotating shaft 1 have an interference fit
  • the bearing 2 when the blade boss 31 is included, the bearing 2 includes a bearing inner ring and a bearing outer ring, and the blade boss 31 and the bearing inner ring have an interference fit.
  • the bearing 2 includes a bearing inner ring and a bearing outer ring, and an interference fit between the bearing outer ring and the first portion of the end cover;
  • the shaft bearing 2 includes a bearing inner ring and a bearing outer ring, and the bearing inner ring and the rotating shaft are a transition fit or a clearance fit;
  • the bearing 2 is a waterproof bearing
  • the material of the blade structure 3 is made of plastic material.
  • the outer ring of the bearing is designed to have an interference fit with the inner diameter of the bearing of the end cover, and the outer diameter of the rotating shaft and the inner ring of the bearing are designed to be a transition or a small gap to facilitate assembly, and the boss of the outer blade structure 3 of the end cap (the blade boss) 31), through the through-shaft hole in the middle of the end cover 6 into the bearing inner ring a certain distance, the outer diameter of the vane boss and the inner ring of the bearing are designed to have a small interference or transition fit, the length of the extension should be considered in the shaft and the bearing
  • the effective contact area of the ring ensures the effective transmission of the torque, generally about 1.5mm, which is adjusted according to the size of the bearing.
  • the inner diameter of the vane boss and the outer diameter of the shaft are also designed to be small interference or transition fit.
  • Waterproof bearing as shown in the assembly drawings of Fig. 6 and Fig. 8, because the outer ring of the bearing and the bearing inner ring of the end cover have an interference fit without gap, the external water or dust cannot enter from the outer ring of the bearing, and the inner ring of the bearing passes through the wind.
  • the leaf boss has an interference fit and no gap.
  • the inner ring of the boss and the outer ring of the rotating shaft are also interference-free and no water or dust can enter from here.
  • the selected bearing is a waterproof bearing, and the bearing cover is also free of water or dust. So can play The role of protection.
  • the present invention also provides an electric machine including a rotor and a stator, which further includes the aforementioned motor sealing structure.
  • the invention adopts the motor sealing structure, uses a motor cooling fan, and extends the fan boss to a certain distance from the inner ring of the bearing to prevent external water or dust from entering, that is, through the blade structure, is sleeved at one end of the rotating shaft. And extending in the direction of the axis of the rotating shaft to the position of the bearing, and the card is inserted into the radially inner side of the bearing and the radial outer side of the rotating shaft, and can be carried out between the bearing and the rotating shaft through the original cooling blade of the motor.
  • the sealing makes the wind blade structure contact with the inner ring of the bearing and rotates synchronously with the inner ring of the bearing, without increasing the sealing member, preventing the direct contact between the rotating shaft and the sealing member, and not generating energy loss, thereby solving the problem of energy loss of the commonly used sealing method. Guarantee motor performance, improve efficiency, and simple structure, easy assembly, can be installed according to normal pressure; no additional parts are added, saving costs.
  • the bearing is first pressed into the bearing chamber of the end cover.
  • the bearing is pressed into place by the outer ring of the tool contact bearing, and then the rotating shaft (rotor) is inserted into the inner ring of the bearing through the rotating shaft.
  • the shoulders are limited.
  • the blade is pressed in.
  • the inner ring of the bearing is forced by the rotating shaft to avoid the shearing force of the inner and outer rings of the bearing.
  • the shoulder on the blade can be used for limiting.
  • the blade can be used to limit the position. Because the blade is made of plastic, it will not cause the inner and outer rings of the bearing to be squeezed after being squeezed. Reduce the play so it does not affect the running noise of the motor.
  • the blade shoulder directly contacts the inner ring of the bearing, and rotates synchronously with the inner ring and the rotating shaft of the bearing, no friction occurs, no energy loss, and the inner ring of the blade
  • a flat structure which cooperates with the flat position of the rotating shaft, and does not rotate relative to the circumference.
  • the end surface of the wind blade is restricted by the shaft retaining ring, which further improves the reliability of the blade.
  • the fan blade is a component for motor cooling, which is already equipped on the motor, especially in the three-phase asynchronous motor, so there is no need to add more parts and save costs.
  • the blades of Fig. 5a-5d are straight type because there is no shoulder, so when the blade is pressed into the air, it is necessary to add a limit structure to the pressure tool, which can be realized by the following two methods.
  • the motor is placed in the tooling, the motor shaft is pressed against the projecting block on the tooling, and the pushing plate on the tooling can be parallelly slid through the sliding groove of the bottom plate.
  • the pressing head on the pushing plate bears against the end face of the blade, and the external thrust Acting on the push plate, pushing the push plate (indenter), so that the wind blade gradually fits on the shaft, and the limit plate is mounted on the support plate.
  • the length of the limit column is just against the push plate when the wind blade is in place (specific length)
  • the limit post can be screwed on the support plate, and the screw can be screwed in and out to perform fine adjustment on the limit length. Therefore, the push plate (indenter) acts on the external thrust to push the wind blade into the rotating shaft, and when the push plate contacts the limit post, the wind blade is installed in place.
  • the difference is that the limit column is cancelled, and the top pressing block on the support plate is limited, and the depth of the sinking table on the top pressing block is designed to be the same as the protruding length of the shaft after the wind blade is in place, that is, the outside
  • the thrust pushes the push plate (indenter) so that the wind blade gradually fits into the shaft.
  • the limit position of the limit column is not visible in the second method.
  • the external thrust is set to a constant force. Under this thrust, when the push plate cannot be displaced, the axial end of the wind blade side has already resisted the countersunk surface of the top press block. Indicates that the assembly is in place.
  • the convex surface of the inner wall of the blade can also be limited, and the convex surface of the blade (ie, the shoulder surface 312) abuts the shoulder (ie, the shoulder 11 of the shaft), that is, it has been assembled, but the structure is limited. It is not easy to use at the same time as the outer leaf structure of the fan blade (Fig. 7a-7c), and over-positioning will occur.

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  • Power Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

Provided are a motor sealing structure and a motor. The motor sealing structure comprises: a rotary shaft (1), a bearing (2), which is sleeved on the rotating shaft (1). A shaft shoulder structure is arranged on an outer peripheral wall of the rotating shaft (1) at a position corresponding to the bearing (2) along an axial direction of the rotating shaft, so as to form a cavity (4) between a portion of the bearing (2) and the shaft shoulder structure. and a fan blade structure (3), which is sleeved at one end of the rotating shaft (1) and extends in the axial direction of the rotating shaft (1) to the position of the bearing (2), and is inserted into the cavity (4). With the present solution, the motor can be cooled and sealed by the blades, so that the blade structure is in contact with an inner ring of the bearing and rotates synchronously with the inner ring of the bearing. There is no need to increase the sealing element, preventing the shaft from directly contacting the sealing element, and with no energy loss. The solution in this invention solves the problem of energy loss of the commonly used sealing method, ensures the performance of the motor, improves the efficiency, and has the advantages of simple structure and convenient assembly, and can be installed according to normal pressing. There is no need of additional parts, which saves costs.

Description

一种电机密封结构和电机Motor sealing structure and motor
本申请要求于2017年11月17日提交中国专利局、申请号为201711145356.4、发明名称为“一种电机密封结构和电机”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。The present application claims priority to Chinese Patent Application No. JP-A No. No. No. No. No. No. No. No. No. No. No. No. No. .
技术领域Technical field
本发明属于电机技术领域，具体涉及一种电机密封结构和电机。The invention belongs to the technical field of motors, and in particular relates to a motor sealing structure and a motor.
背景技术Background technique
电机在现代社会的所有行业中几乎都有运用，无论是工业、农业、交通运输还是家庭生活，都离不开电机，电机的使用范围如此广泛，使得其防护等级的要求也不尽相同，由于电机实现的是电量与机械能的转换，所以当电机处于开放空间时，自身的防护能力就会尤为重要。Motors are used in almost all industries of modern society. Whether it is industrial, agricultural, transportation or family life, motors are inseparable. The use of motors is so wide that their protection levels are not the same. The motor realizes the conversion of electricity and mechanical energy, so when the motor is in open space, its own protection ability is particularly important.
电机主要是由机座(机壳)，定、转子铁芯，转轴，轴承，端盖等零部件组成，电机的防护主要是指机座(机壳)与端盖之间，转轴对外界或转轴与轴承之间，轴承与端盖的轴承室之间的密封效果。机座(机壳)与端盖相对静止，通过压力，或者内置密封圈，添加密封胶等均可实现。而对于转轴类似的动密封，一般采用毛毡、油封、迷宫型结构或者挤压型的密封圈等，此类密封通常有以下几个问题：The motor is mainly composed of the base (chassis), stator, rotor core, rotating shaft, bearing, end cover and other components. The protection of the motor mainly refers to the space between the base (the casing) and the end cover, and the rotating shaft is to the outside or The sealing effect between the shaft and the bearing, between the bearing and the bearing chamber of the end cap. The base (the casing) and the end cover are relatively stationary, and can be realized by pressure, or a built-in sealing ring, and adding a sealant. For dynamic seals with similar shafts, felts, oil seals, labyrinths or extruded seals are generally used. These seals usually have the following problems:
1.转轴与密封件直接接触，会造成能量损失，严重的会影响电机性能，效率降低；1. The direct contact between the rotating shaft and the seal will cause energy loss, which will seriously affect the performance of the motor and reduce the efficiency;
2.迷宫型的密封结构复杂，而且使用受限，只适合一定的转速下；2. The labyrinth type has a complicated sealing structure and is limited in use, and is only suitable for a certain speed;
3.端盖的轴承室内的密封，需要轴承外圈配合挤压型密封圈，轴承会受到内外圈的剪切力，增大了轴承的滚珠与支架压力，易产生噪音，并影响轴承的寿命；3. The seal of the bearing housing of the end cover requires the outer ring of the bearing to be matched with the extrusion type sealing ring. The bearing will be subjected to the shearing force of the inner and outer rings, which increases the pressure of the ball and the bracket of the bearing, which is easy to generate noise and affect the life of the bearing. ;
4.增加了零件，像油封、密封圈等，增加了成本。4. Increased parts, such as oil seals, seals, etc., increase the cost.
由于现有技术中的电机存在转轴与密封件直接接触，会造成能量损失，严 重的会影响电机性能，效率降低；密封结构复杂，而且使用受限，只适合一定的转速下；易产生噪音，轴承寿命低；增加了零件，增加了成本等技术问题，因此本发明研究设计出一种电机密封结构和电机。Because the motor in the prior art has direct contact between the rotating shaft and the sealing member, energy loss is caused, the performance of the motor is seriously affected, and the efficiency is lowered; the sealing structure is complicated, and the use is limited, and is only suitable for a certain rotating speed; noise is easily generated. The bearing life is low; the parts are added, and the cost is increased. Therefore, the present invention has devised a motor sealing structure and a motor.
发明内容Summary of the invention
因此，本发明要解决的技术问题在于克服现有技术中的电机密封结构存在能量损失，严重的会影响电机性能，效率降低的缺陷，从而提供一种电机密封结构和电机。Therefore, the technical problem to be solved by the present invention is to overcome the defects in the prior art motor sealing structure, which seriously affect the performance of the motor and reduce the efficiency, thereby providing a motor sealing structure and a motor.
本发明提供一种电机密封结构，其包括：The invention provides a motor sealing structure, which comprises:
转轴；Rotary shaft
轴承，套设在所述转轴上，且在所述转轴的外周壁上、与所述轴承相对应的位置沿所述沿转轴轴向还设置有轴肩结构，使得所述轴承的部分与所述轴肩结构之间形成容腔；a bearing is sleeved on the rotating shaft, and a shoulder structure is further disposed along the axial direction of the rotating shaft at a position corresponding to the bearing on an outer peripheral wall of the rotating shaft, so that a part of the bearing Forming a cavity between the shoulder structures;
风叶结构，套设在所述转轴的一端，并沿转轴轴线方向延伸至所述轴承的位置，且进入所述容腔中。The blade structure is sleeved at one end of the rotating shaft and extends in the direction of the axis of the rotating shaft to the position of the bearing and enters the cavity.
优选地，Preferably,
所述风叶结构卡设进入所述轴承与所述转轴之间的部分沿所述轴线方向的长度为1.5mm-5.0mm。The blade structure is inserted into a portion between the bearing and the rotating shaft and has a length in the axial direction of 1.5 mm to 5.0 mm.
优选地，Preferably,
所述风叶结构包括风叶凸台和叶片，所述风叶凸台包括风叶凸台孔、所述风叶凸台通过所述风叶凸台孔套设在所述转轴的一端部，使得所述风叶凸台能被所述转轴带动而进行转动。The blade structure includes a blade boss and a blade, and the blade boss includes a blade boss hole, and the blade boss is sleeved at one end of the rotating shaft through the blade boss hole. The blade boss can be rotated by the rotating shaft.
优选地，Preferably,
所述转轴的外周上设置有第一扁位结构，所述风叶凸台孔的内壁上设置有能与所述转轴的所述第一扁位结构相匹配的第二扁位结构。A first flat structure is disposed on an outer circumference of the rotating shaft, and an inner flat wall of the air vane hole is provided with a second flat structure capable of matching the first flat structure of the rotating shaft.
优选地，Preferably,
所述风叶凸台孔的内壁还设置有沿所述轴线方向延伸的台肩面，所述转轴外周面上与之相对应的位置设置有台肩，所述台肩面与所述台肩能够相互匹配相接以完成转轴和风叶凸台之间的轴向定位。The inner wall of the vane boss hole is further provided with a shoulder surface extending in the axial direction, and a shoulder corresponding to the outer peripheral surface of the rotating shaft is provided with a shoulder, the shoulder surface and the shoulder The mating can be matched to each other to complete the axial positioning between the rotating shaft and the vane boss.
优选地，Preferably,
在所述风叶凸台的端部外周面上还设置有台阶，所述台阶能够***所述容腔中、与所述轴承之间完成轴向限位。A step is further provided on an outer peripheral surface of the end of the vane boss, the step being insertable into the cavity and axially restrained from the bearing.
优选地，Preferably,
所述风叶结构还包括轮盘，所述轮盘连接设置在所述风叶凸台的径向外侧，多个所述叶片设置在所述轮盘上、且沿其周向方向进行排布。The blade structure further includes a wheel disk, the wheel disk connection is disposed on a radially outer side of the blade boss, and the plurality of blades are disposed on the wheel disk and arranged along a circumferential direction thereof .
优选地，Preferably,
在所述轮盘上还设置有加强筋，所述加强筋的一端与所述风叶凸台的外周面固定连接。A reinforcing rib is further disposed on the wheel, and one end of the reinforcing rib is fixedly connected to an outer peripheral surface of the blade boss.
优选地，Preferably,
所述加强筋为多个、其数量与所述叶片数量相对应，且沿所述轮盘的周向方向进行排布。The reinforcing ribs are plural, the number of which corresponds to the number of the blades, and are arranged along the circumferential direction of the wheel.
优选地，Preferably,
还包括端盖，所述端盖包括在所述轴线方向相接的第一部分和第二部分，第一部分套设在所述轴承的径向外侧、第二部分位于所述转轴的径向外侧，所述风叶结构的所述风叶凸台***所述端盖的所述第二部分的径向内侧和所述转轴的径向外侧之间的位置。An end cap is further included, the end cap including a first portion and a second portion that meet in the axial direction, the first portion is sleeved radially outward of the bearing, and the second portion is located radially outward of the shaft The vane boss of the vane structure is inserted into a position between a radially inner side of the second portion of the end cap and a radially outer side of the rotating shaft.
优选地，Preferably,
当包括风叶凸台孔时，所述风叶凸台孔的内壁与转轴的外周壁之间为过盈配合；When the blade boss hole is included, an interference fit is formed between the inner wall of the blade boss hole and the outer peripheral wall of the rotating shaft;
和/或，当包括风叶凸台时，所述轴承包括轴承内圈和轴承外圈，且所述风叶凸台与轴承内圈之间为过盈配合，And/or, when the blade boss is included, the bearing includes a bearing inner ring and a bearing outer ring, and an interference fit between the blade boss and the bearing inner ring,
和/或，所述轴承包括轴承内圈和轴承外圈，所述轴承外圈与端盖的所述第一部分之间为过盈配合；And/or, the bearing includes a bearing inner ring and a bearing outer ring, and an interference fit between the bearing outer ring and the first portion of the end cap;
和/或，所述轴轴承包括轴承内圈和轴承外圈，所述轴承内圈与转轴之间为过渡配合或间隙配合；And/or, the shaft bearing comprises a bearing inner ring and a bearing outer ring, and the inner ring of the bearing and the rotating shaft are a transition fit or a clearance fit;
和/或，所述轴承为防水轴承；And/or, the bearing is a waterproof bearing;
和/或，所述风叶结构的材质为塑料材质。And/or, the material of the blade structure is made of plastic material.
本发明还提供一种电机，包括转子、定子，其还包括前述的电机密封结构。The present invention also provides an electric machine including a rotor and a stator, which further includes the aforementioned motor sealing structure.
本发明提供的一种电机密封结构和电机具有如下有益效果：The motor sealing structure and the motor provided by the invention have the following beneficial effects:
本发明的电机密封结构和电机，通过风叶结构，套设在所述转轴的一端， 并沿转轴轴线方向延伸至所述轴承的位置，且卡设进入所述轴承的径向内侧、所述转轴的径向外侧，能够通过电机冷却用风叶进行密封，使得风叶结构与轴承内圈接触，与轴承内圈同步旋转，不用增加密封件、防止了转轴与密封件直接接触，不会产生能量损耗，解决了目前常用密封方式能量损失的问题，保证电机性能，提高效率，而且结构简单，装配方便，按正常压装即可；不再增加其它零件，节省成本。The motor sealing structure and the motor of the present invention are sleeved at one end of the rotating shaft through a blade structure, and extend to the position of the bearing along the axis of the rotating shaft, and are inserted into the radially inner side of the bearing, The radial outer side of the rotating shaft can be sealed by the fan cooling fan, so that the blade structure is in contact with the inner ring of the bearing, and rotates synchronously with the inner ring of the bearing, without increasing the sealing member, preventing the shaft from directly contacting the sealing member, and not generating The energy loss solves the problem of energy loss in the current common sealing method, ensures the performance of the motor, improves the efficiency, and has the advantages of simple structure and convenient assembly, and can be installed according to normal pressing; no other parts are added, and cost is saved.
附图说明DRAWINGS
图1是本发明的电机的外形立体结构示意图；1 is a schematic perspective view showing the appearance of a motor of the present invention;
图2是本发明的电机密封结构的剖视图；Figure 2 is a cross-sectional view showing the motor sealing structure of the present invention;
图3是图2的A部分的局部放大图；Figure 3 is a partial enlarged view of a portion A of Figure 2;
图4是图3的B部分的局部放大图；Figure 4 is a partial enlarged view of a portion B of Figure 3;
图5a是本发明的风叶结构的实施方式一的正面立体结构图；Figure 5a is a front perspective structural view of a first embodiment of the blade structure of the present invention;
图5b是本发明的风叶结构的实施方式一的背面立体结构图；Figure 5b is a rear perspective structural view of the first embodiment of the blade structure of the present invention;
图5c是本发明的风叶结构的实施方式一的正面结构图；Figure 5c is a front structural view showing the first embodiment of the blade structure of the present invention;
图5d是本发明的风叶结构的实施方式一的侧面剖视结构图；Figure 5d is a side cross-sectional structural view showing the first embodiment of the blade structure of the present invention;
图6是本发明的风叶结构的实施方式一的装配结构图；Figure 6 is an assembled structural view of Embodiment 1 of the blade structure of the present invention;
图7a是本发明的风叶结构的实施方式二的正面立体结构图；Figure 7a is a front perspective structural view of a second embodiment of the blade structure of the present invention;
图7b是本发明的风叶结构的实施方式二的背面立体结构图；Figure 7b is a rear perspective structural view of Embodiment 2 of the blade structure of the present invention;
图7c是图7b的C部分的局部放大结构图；Figure 7c is a partially enlarged structural view of a portion C of Figure 7b;
图8是本发明的风叶结构的实施方式二的装配结构图。Fig. 8 is an assembly structural view of a second embodiment of the blade structure of the present invention.
图中附图标记表示为：The reference numerals in the figure are indicated as:
1、转轴；11、台肩；2、轴承；3、风叶结构；31、风叶凸台；310、风叶凸台孔；311、第二扁位结构；312、台肩面；313、台阶；314、轴用挡圈；32、叶片；33、轮盘；4、容腔；5、加强筋；6、端盖；61、前端盖；62、后端盖；7、机座；8、接线盒；9、支脚；10、风罩；101、转子铁芯；102、定子铁芯。1, the shaft; 11, shoulder; 2, bearing; 3, the blade structure; 31, the blade boss; 310, the blade boss hole; 311, the second flat structure; 312, shoulder surface; Step; 314, shaft retaining ring; 32, blade; 33, wheel; 4, cavity; 5, stiffener; 6, end cap; 61, front end cover; 62, rear end cover; 7, base; , junction box; 9, feet; 10, hood; 101, rotor core; 102, stator core.
具体实施方式Detailed ways
参见图1-8所示，本发明提供一种电机密封结构，其包括：Referring to Figures 1-8, the present invention provides a motor sealing structure comprising:
转轴1； Rotary shaft 1;
轴承2，套设在所述转轴1上，且在所述转轴1的外周壁上、与所述轴承2相对应的位置沿所述沿转轴轴向还开设有轴肩结构，使得所述轴承2的部分与所述轴肩结构之间形成容腔4；a bearing 2 is sleeved on the rotating shaft 1, and a shoulder structure is further opened along the axial direction of the rotating shaft at a position corresponding to the bearing 2 on the outer peripheral wall of the rotating shaft 1, so that the bearing a portion of 2 and the shoulder structure between the formation of a cavity 4;
风叶结构3，套设在所述转轴1的一端，并沿转轴1轴线方向延伸至所述轴承2的位置，且卡设进入所述容腔4中，即卡设进入轴承2的径向内侧、所述转轴1的径向外侧的位置。The blade structure 3 is sleeved at one end of the rotating shaft 1 and extends in the axial direction of the rotating shaft 1 to the position of the bearing 2, and is inserted into the cavity 4, that is, the radial direction of the bearing 2 The inner side and the radially outer position of the rotating shaft 1.
本发明利用电机冷却风扇，将风扇凸台加长伸入至轴承内圈一定距离，防止外界水或粉尘进入，即通过风叶结构，套设在所述转轴的一端，并沿转轴轴线方向延伸至所述轴承的位置，且卡设进入所述轴承的径向内侧、所述转轴的径向外侧(即卡设进入转轴上开设的轴肩结构与轴承之间形成的容腔中，如图2-4所示，该轴肩结构延伸至与轴承的最右端的靠左一段的位置、未延伸至轴承的最左端，使得轴承左端能够与转轴配合以完成支承作用、该容腔处用于容纳风叶结构***而进行密封)，能够通过电机原有的冷却用风叶对轴承和转轴之间进行密封，使得风叶结构与轴承内圈接触，与轴承内圈同步旋转，不用增加密封件、防止了转轴与密封件直接接触，不会产生能量损耗，解决了目前常用密封方式能量损失的问题，保证电机性能，提高效率，而且结构简单，装配方便，按正常压装即可；不再增加其它零件，节省成本。The invention utilizes a motor cooling fan to extend the fan boss to a certain distance from the inner ring of the bearing to prevent external water or dust from entering, that is, through the blade structure, is sleeved at one end of the rotating shaft and extends along the axis of the rotating shaft to The position of the bearing is inserted into the radially inner side of the bearing, and the radial outer side of the rotating shaft (ie, the cavity formed in the shaft shoulder structure and the bearing formed on the rotating shaft is inserted into the cavity formed by the bearing, as shown in FIG. 2 As shown in Figure -4, the shoulder structure extends to the leftmost position of the rightmost end of the bearing and does not extend to the leftmost end of the bearing, so that the left end of the bearing can cooperate with the rotating shaft to complete the supporting action, and the cavity is used for receiving The blade structure is inserted and sealed), and the bearing between the bearing and the rotating shaft can be sealed by the original cooling blade of the motor, so that the blade structure is in contact with the inner ring of the bearing, and rotates synchronously with the inner ring of the bearing, without adding a seal, The direct contact between the rotating shaft and the sealing member is prevented, energy loss is not generated, the problem of energy loss of the current common sealing method is solved, the performance of the motor is ensured, the efficiency is improved, and the structure is simple. Ease of assembly, press-fit to normal; no increase in the other parts, cost savings.
本发明采用的风叶密封方式，利用风叶凸台(即风叶凸台31)，伸入到轴承内圈一定距离，凸台外圈与轴承内圈过渡或小过盈配合，轴承外圈与端盖的轴承室过盈配合，轴承采用防水轴承，此密封方式，既可保证电机的防护等级，风叶与轴承内圈同步旋转，又不会造成能量损耗，结构简单，装配方便，不会对其它零件造成损伤，无需增加新零件。The blade sealing method adopted by the invention utilizes the blade boss (ie, the blade boss 31) to extend into the inner ring of the bearing at a certain distance, and the outer ring of the boss and the inner ring of the bearing have a transition or a small interference fit, and the outer ring of the bearing The bearing chamber of the end cover is interference-fitted, and the bearing adopts waterproof bearing. This sealing method can ensure the protection level of the motor, the fan and the inner ring of the bearing rotate synchronously without causing energy loss, the structure is simple, the assembly is convenient, no Damage to other parts without adding new parts.
图1为典型的三相异步电机外形，电机在运行过程中会有各种无功损耗，这些损耗会转换成热能，电机尾部的风叶随转子同步旋转，产生的风经风罩沿着机座上的冷却片流动，带走电机内部散出的热量，以达到电机降温的效果。Figure 1 shows the shape of a typical three-phase asynchronous motor. During the operation of the motor, there will be various reactive losses. These losses will be converted into thermal energy. The blades at the rear of the motor rotate synchronously with the rotor, and the wind is generated along the machine. The cooling fins on the seat flow, taking away the heat dissipated inside the motor to achieve the effect of cooling the motor.
优选地，Preferably,
所述风叶结构3卡设进入所述轴承2与所述转轴1之间的部分沿所述轴线方向的长度为1.5mm-5.0mm(本发明优选针对608轴承时、该长度优选取值为1.5mm)。伸入的长度要考虑转轴与轴承内圈的接触有效面积，具体根据轴承 规格大小适当调整，本发明将该距离设置为1.5mm左右、能够有效保证力矩的传递，使得轴承与转轴之间得到有效地密封。The length of the portion of the blade structure 3 that is inserted between the bearing 2 and the rotating shaft 1 in the axial direction is 1.5 mm - 5.0 mm (when the present invention is preferably directed to the 608 bearing, the length is preferably a value) 1.5mm). The length of the penetration should take into account the effective contact area between the rotating shaft and the inner ring of the bearing, and is appropriately adjusted according to the size of the bearing. According to the invention, the distance is set to about 1.5 mm, which can effectively ensure the transmission of the torque, so that the bearing and the rotating shaft are effectively effective. Ground sealed.
优选地，Preferably,
所述风叶结构3包括风叶凸台31和叶片32，所述风叶凸台31包括风叶凸台孔310、所述风叶凸台31通过所述风叶凸台孔310套设在所述转轴1的一端部，所述叶片32能随着所述风叶凸台31的转动而旋转。这是本发明的密封结构中的风叶结构的具体结构形式，能够通过风叶凸台套设在转轴上对风叶结构进行固定、叶片随着风叶凸台转动而旋转，使得能够通过叶片的旋转对电机内部结构(包括转子、定子等)进行冷却降温。The blade structure 3 includes a blade boss 31 and a blade 32. The blade boss 31 includes a blade boss hole 310, and the blade boss 31 is sleeved through the blade boss hole 310. At one end of the rotating shaft 1, the vane 32 can rotate as the vane boss 31 rotates. This is a specific structural form of the blade structure in the sealing structure of the present invention. The blade structure can be fixed on the rotating shaft by the blade boss, and the blade rotates as the blade boss rotates, so that the blade can be passed through the blade. The rotation of the motor cools down the internal structure of the motor (including the rotor, stator, etc.).
图2、图3为风叶密封结构，图2主要为电机内部结构，包括定转子铁芯、转轴1、端盖6、以及轴承2等。转轴1通过轴肩与轴承内圈接触，实现轴向限位。2 and 3 are the air blade sealing structure, and FIG. 2 is mainly the internal structure of the motor, including the fixed rotor core, the rotating shaft 1, the end cover 6, and the bearing 2. The shaft 1 is in contact with the inner ring of the bearing through the shoulder to achieve axial limitation.
图4为风叶密封结构细节，风叶结构3的凸台(风叶凸台31)直接延长到与轴承内圈接触一段距离，凸台的外圈与轴承内圈设计为过渡或小过盈配合，使外部的水或粉尘无法从轴承内圈进入，而轴承外圈与端盖6的轴承室内圈按过盈配合，水或粉尘也无法从此通过，为方便装配，电机转轴外圈与轴承内圈设计为小间隙或过渡配合，轴承选用防水轴承。Figure 4 is a detail of the blade sealing structure. The boss of the blade structure 3 (the blade boss 31) is directly extended to a distance from the inner ring of the bearing, and the outer ring of the boss and the inner ring of the bearing are designed to be transitional or small. Cooperate, so that the external water or dust can not enter from the inner ring of the bearing, and the bearing outer ring and the bearing inner ring of the end cover 6 are in an interference fit, water or dust can not pass through, for the convenience of assembly, the motor shaft outer ring and the bearing The inner ring is designed for small clearance or transition fit, and the bearing is made of waterproof bearing.
优选地，Preferably,
所述转轴1的外周上设置有第一扁位结构，所述风叶凸台孔310的内壁上设置有能与所述转轴1的所述第一扁位结构相匹配的第二扁位结构311，使得所述风叶凸台31能被所述转轴1带动而进行转动。通过转轴上的第一扁位结构和风叶凸台孔上的第二扁位结构，使得风叶凸台能够与转轴相配合时通过两个扁位结构进行配合、并对二者的周向方向进行限位作用，从而使得转轴转动时、风叶凸台被带动随其一起同步转动，轴承内圈也与转轴一起同步转动，使得转轴、轴承之间通过风叶凸台实现良好的密封，并通过转动产生风量、对电机内部进行降温冷却。a first flat structure is disposed on an outer circumference of the rotating shaft 1 , and a second flat structure capable of matching the first flat structure of the rotating shaft 1 is disposed on an inner wall of the air vane hole 310 311, the blade boss 31 can be rotated by the rotating shaft 1. Through the first flat structure on the rotating shaft and the second flat structure on the hole of the vane, the vane boss can be matched with the rotating shaft by two flat structures and the circumferential direction of the two The limiting action is performed, so that when the rotating shaft rotates, the vane boss is driven to rotate synchronously with the rotating shaft, and the inner ring of the bearing also rotates synchronously with the rotating shaft, so that the rotating shaft and the bearing are sealed by the vane bosses, and The air volume is generated by rotation, and the inside of the motor is cooled and cooled.
参见图2-4所示，优选地，Referring to Figures 2-4, preferably,
所述风叶凸台孔310的内壁还设置有沿所述轴线方向延伸的台肩面312，所述转轴1外周面上与之相对应的位置设置有台肩11，所述台肩面312与所述台肩11能够相互匹配相接以完成转轴1和风叶凸台31之间的轴向定位。通过 台肩和台肩面的设置，能够使得风叶凸台孔与转轴完成轴向方向的配合和定位，保证风叶凸台沿轴线方向装配时装配到位(至合适的位置)。The inner wall of the vane boss hole 310 is further provided with a shoulder surface 312 extending in the axial direction. The outer peripheral surface of the rotating shaft 1 is provided with a shoulder 11 at a position corresponding to the outer peripheral surface, and the shoulder surface 312 The shoulders 11 can be mated with each other to complete the axial positioning between the rotating shaft 1 and the vane boss 31. Through the arrangement of the shoulder and the shoulder surface, the axial direction of the vane boss hole and the rotating shaft can be matched and positioned to ensure that the vane boss is assembled in position (to a suitable position) when assembled in the axial direction.
参见图7a-图8所示，优选地，Referring to Figures 7a-8, preferably,
在所述风叶凸台31的端部外周面上还设置有台阶313，所述台阶313能够***所述容腔4中、与所述轴承2之间完成轴向限位。通过风叶凸台的端部外周面上设置的台阶，能够使得台阶与容腔形成插接配合，使得轴承与转轴之间的密封性能被进一步得到增强，并且还进一步起到在轴向和径向方向的定位作用，使得风叶结构装配完成后不易脱落，提高了密封性能。A step 313 is further provided on the outer peripheral surface of the end of the vane boss 31, and the step 313 can be inserted into the cavity 4 to complete axial restraint with the bearing 2. Through the step provided on the outer peripheral surface of the end of the vane boss, the step can be inserted into the cavity, so that the sealing performance between the bearing and the rotating shaft is further enhanced, and further in the axial direction and the diameter The positioning action in the direction makes the blade structure not easy to fall off after assembly, and the sealing performance is improved.
图5a-5d、图7a-7c为两种风叶结构，其中图7a-7c衍生为风叶凸台31端部处加设台阶结构313，在风叶压力过程中，可以起限位作用。两种风叶内圈均有扁位结构，与转轴扁位相配，限位风叶周向与转向相对旋转。Figures 5a-5d and 7a-7c show two types of blade structures, wherein Figures 7a-7c are derived from the stepped structure 313 at the end of the blade boss 31, which can serve as a limit during the blade pressure. Both inner blades of the wind blade have a flat structure, which matches the flat position of the rotating shaft, and the circumferential direction of the limiting blade rotates relative to the steering.
优选地，Preferably,
所述风叶结构3还包括轮盘33，所述轮盘33连接设置在所述风叶凸台31的径向外侧，多个所述叶片32设置在所述轮盘33上、且沿其周向方向进行排布。通过设置上述的轮盘结构，能够对风叶结构的结构进行支撑，增强风叶结构的结构强度，并且通过旋转带动其上的叶片进行转动，以达到旋转出风的作用和效果。The blade structure 3 further includes a wheel 33 connected in a radial outer side of the blade boss 31, and a plurality of the blades 32 are disposed on the wheel 33 and along the same Arrange in the circumferential direction. By providing the above-described wheel structure, the structure of the blade structure can be supported, the structural strength of the blade structure can be enhanced, and the blades on the blade can be rotated by rotation to achieve the action and effect of rotating the wind.
优选地，Preferably,
在所述轮盘33上还设置有加强筋5，所述加强筋5的一端与所述风叶凸台31的外周面固定连接。通过设置加强筋能够对风叶结构的结构强度进行进一步加强，保证风叶结构旋转时的稳定性。A rib 5 is further disposed on the wheel 33, and one end of the rib 5 is fixedly coupled to an outer peripheral surface of the blade boss 31. By providing the reinforcing ribs, the structural strength of the blade structure can be further strengthened to ensure the stability of the blade structure when rotated.
优选地，Preferably,
所述加强筋5为多个、其数量与所述叶片数量相对应，且沿所述轮盘33的周向方向进行排布。通过多个加强筋能够对轮盘的周向方向进行支撑作用，提高周向方向对风叶结构整体支撑的结构强度。The ribs 5 are plural, the number of which corresponds to the number of the blades, and are arranged along the circumferential direction of the wheel 33. The plurality of reinforcing ribs can support the circumferential direction of the wheel to improve the structural strength of the overall support of the blade structure in the circumferential direction.
优选地，Preferably,
还包括端盖6，所述端盖6包括在所述轴线方向相接的第一部分和第二部分，第一部分套设在所述轴承2的径向外侧、第二部分位于所述转轴1的径向外侧(参见图2-4所示，即该第一部分为位于图中左侧的轴承室、以允许轴承进入而对其进行支撑作用，第二部分为位于图中右侧的端板)，所述风叶结构 3的所述风叶凸台31***所述端盖6的所述第二部分的径向内侧和所述转轴1的径向外侧之间的位置。Also included is an end cap 6 including a first portion and a second portion that meet in the axial direction, a first portion being sleeved radially outward of the bearing 2 and a second portion being located at the shaft 1 Radial outer side (see Figure 2-4, the first part is the bearing chamber on the left side of the figure to support the bearing to enter, the second part is the end plate on the right side of the figure) The vane boss 31 of the vane structure 3 is inserted into a position between a radially inner side of the second portion of the end cap 6 and a radially outer side of the rotating shaft 1.
由于端盖属于电机本身的结构，通过上述的结构设置，能够使得风叶结构中的风叶凸台与端盖之间也形成配合作用，即插接在端盖的径向内侧和转轴的径向外侧之间、再进一步伸入至轴承的径向内侧和转轴径向外侧之间，能够对端盖和转轴之间也形成密封作用，提高端盖与转轴之间的密封效果，进一步提高轴承与转轴之间的密封效果，且还保证了能量不损失或最大程度小的损失。Since the end cap belongs to the structure of the motor itself, through the above-mentioned structural arrangement, a matching function can also be formed between the vane boss and the end cap in the blade structure, that is, the radial inner side of the end cap and the diameter of the rotating shaft Between the outer side and the outer side of the bearing and the radially outer side of the rotating shaft, a sealing effect can be formed between the end cover and the rotating shaft, thereby improving the sealing effect between the end cover and the rotating shaft, and further improving the bearing. The sealing effect with the shaft and also guarantees no loss of energy or minimal loss.
优选地，Preferably,
当包括风叶凸台孔310时，所述风叶凸台孔310的内壁与转轴1的外周壁之间为过盈配合；When the blade boss hole 310 is included, the inner wall of the blade boss hole 310 and the outer peripheral wall of the rotating shaft 1 have an interference fit;
和/或，当包括风叶凸台31时，所述轴承2包括轴承内圈和轴承外圈，且所述风叶凸台31与轴承内圈之间为过盈配合，And/or, when the blade boss 31 is included, the bearing 2 includes a bearing inner ring and a bearing outer ring, and the blade boss 31 and the bearing inner ring have an interference fit.
和/或，所述轴承2包括轴承内圈和轴承外圈，所述轴承外圈与端盖的所述第一部分之间为过盈配合；And/or, the bearing 2 includes a bearing inner ring and a bearing outer ring, and an interference fit between the bearing outer ring and the first portion of the end cover;
和/或，所述轴轴承2包括轴承内圈和轴承外圈，所述轴承内圈与转轴之间为过渡配合或间隙配合；And/or, the shaft bearing 2 includes a bearing inner ring and a bearing outer ring, and the bearing inner ring and the rotating shaft are a transition fit or a clearance fit;
和/或，所述轴承2为防水轴承；And/or, the bearing 2 is a waterproof bearing;
和/或，所述风叶结构3的材质为塑料材质。And/or, the material of the blade structure 3 is made of plastic material.
轴承外圈设计为与端盖的轴承室内径过盈配合，而转轴外径与轴承内圈设计为过渡或小间隙配合，方便装配，端盖外风叶结构3的凸台(风叶凸台31)，通过端盖6中间的过轴孔伸入到轴承内圈一定距离，风叶凸台外径与轴承内圈设计为小过盈或过渡配合，伸入的长度要考虑转轴与轴承内圈的接触有效面积，保证力矩的有效传递，一般1.5mm左右即可，具体根据轴承规格大小适当调整，而风叶凸台的内径与转轴外径也设计为小过盈或过渡配合，轴承选用防水轴承，如图6、图8的装配图，由于轴承外圈与端盖的轴承室内圈过盈配合无间隙，因此外界的水或粉尘无法从轴承外圈进入，而轴承内圈通过与风叶凸台过盈配合无间隙，凸台内圈与转轴外圈也是过盈无间隙，水或粉尘也无法从此处进入，而选用的轴承为防水轴承，轴承盖处也无水或粉尘进入，因此可起到防护的作用。The outer ring of the bearing is designed to have an interference fit with the inner diameter of the bearing of the end cover, and the outer diameter of the rotating shaft and the inner ring of the bearing are designed to be a transition or a small gap to facilitate assembly, and the boss of the outer blade structure 3 of the end cap (the blade boss) 31), through the through-shaft hole in the middle of the end cover 6 into the bearing inner ring a certain distance, the outer diameter of the vane boss and the inner ring of the bearing are designed to have a small interference or transition fit, the length of the extension should be considered in the shaft and the bearing The effective contact area of the ring ensures the effective transmission of the torque, generally about 1.5mm, which is adjusted according to the size of the bearing. The inner diameter of the vane boss and the outer diameter of the shaft are also designed to be small interference or transition fit. Waterproof bearing, as shown in the assembly drawings of Fig. 6 and Fig. 8, because the outer ring of the bearing and the bearing inner ring of the end cover have an interference fit without gap, the external water or dust cannot enter from the outer ring of the bearing, and the inner ring of the bearing passes through the wind. The leaf boss has an interference fit and no gap. The inner ring of the boss and the outer ring of the rotating shaft are also interference-free and no water or dust can enter from here. The selected bearing is a waterproof bearing, and the bearing cover is also free of water or dust. So can play The role of protection.
本发明还提供一种电机，包括转子、定子，其还包括前述的电机密封结构。 本发明通过前述的电机密封结构，利用电机冷却风扇，将风扇凸台加长伸入至轴承内圈一定距离，防止外界水或粉尘进入，即通过风叶结构，套设在所述转轴的一端，并沿转轴轴线方向延伸至所述轴承的位置，且卡设进入所述轴承的径向内侧、所述转轴的径向外侧，能够通过电机原有的冷却用风叶对轴承和转轴之间进行密封，使得风叶结构与轴承内圈接触，与轴承内圈同步旋转，不用增加密封件、防止了转轴与密封件直接接触，不会产生能量损耗，解决了目前常用密封方式能量损失的问题，保证电机性能，提高效率，而且结构简单，装配方便，按正常压装即可；不再增加其它零件，节省成本。The present invention also provides an electric machine including a rotor and a stator, which further includes the aforementioned motor sealing structure. The invention adopts the motor sealing structure, uses a motor cooling fan, and extends the fan boss to a certain distance from the inner ring of the bearing to prevent external water or dust from entering, that is, through the blade structure, is sleeved at one end of the rotating shaft. And extending in the direction of the axis of the rotating shaft to the position of the bearing, and the card is inserted into the radially inner side of the bearing and the radial outer side of the rotating shaft, and can be carried out between the bearing and the rotating shaft through the original cooling blade of the motor. The sealing makes the wind blade structure contact with the inner ring of the bearing and rotates synchronously with the inner ring of the bearing, without increasing the sealing member, preventing the direct contact between the rotating shaft and the sealing member, and not generating energy loss, thereby solving the problem of energy loss of the commonly used sealing method. Guarantee motor performance, improve efficiency, and simple structure, easy assembly, can be installed according to normal pressure; no additional parts are added, saving costs.
具体的装配过程，首先将轴承压入进端盖的轴承室，压入时，用工装接触轴承的外圈施压将轴承压力到位，再将转轴(转子)伸入轴承内圈，通过转轴上的轴肩进行限位。最后将风叶压入，压入时，通过转轴使轴承内圈受力，避免轴承内外圈受到剪切力，如图7a-7c的风叶结构，可利用风叶上的台肩进行限位，无台肩结构的，如图5a-5d的风叶，可利用工装进行限位，由于风叶材质为塑料，受挤压后不会使轴承的内外圈在均受挤压的情况下而减小游隙，因此不会影响电机的运行噪音。In the specific assembly process, the bearing is first pressed into the bearing chamber of the end cover. When pressing in, the bearing is pressed into place by the outer ring of the tool contact bearing, and then the rotating shaft (rotor) is inserted into the inner ring of the bearing through the rotating shaft. The shoulders are limited. Finally, the blade is pressed in. When pressing in, the inner ring of the bearing is forced by the rotating shaft to avoid the shearing force of the inner and outer rings of the bearing. As shown in the blade structure of Figures 7a-7c, the shoulder on the blade can be used for limiting. , without the shoulder structure, as shown in Figure 5a-5d, the blade can be used to limit the position. Because the blade is made of plastic, it will not cause the inner and outer rings of the bearing to be squeezed after being squeezed. Reduce the play so it does not affect the running noise of the motor.
因此通过本发明，不仅可以保证电机的防护等级，而且由于风叶台肩直接与轴承内圈接触配合，与轴承内圈、转轴同步旋转，不会产生摩擦，无能量损失，另外风叶内圈有一段扁位结构，与转轴的扁位配合，不会发生相对周向转动，风叶的端面通过轴用挡圈限位，更加提高了风叶的可靠性。Therefore, according to the invention, not only the protection level of the motor can be ensured, but also because the blade shoulder directly contacts the inner ring of the bearing, and rotates synchronously with the inner ring and the rotating shaft of the bearing, no friction occurs, no energy loss, and the inner ring of the blade There is a flat structure, which cooperates with the flat position of the rotating shaft, and does not rotate relative to the circumference. The end surface of the wind blade is restricted by the shaft retaining ring, which further improves the reliability of the blade.
风叶为电机冷却用零件，在电机上本已配备，尤其在三相异步电机中为标配，因此无需再增加零件，节省了成本。The fan blade is a component for motor cooling, which is already equipped on the motor, especially in the three-phase asynchronous motor, so there is no need to add more parts and save costs.
关于图5a-5d风叶的安装限位问题说明：Description of the installation limit of the blades of Figure 5a-5d:
图5a-5d风叶由于没有台肩，为直筒型，因此在压入风叶时，需在压力工装上增加限位结构，可通过以下两种方式实现。The blades of Fig. 5a-5d are straight type because there is no shoulder, so when the blade is pressed into the air, it is necessary to add a limit structure to the pressure tool, which can be realized by the following two methods.
方法一：method one:
电机置于工装内，电机转轴顶住工装上的项压块，工装上的推板可通过底板的滑槽进行平行滑动，压风叶时，推板上的压头顶住风叶端面，外界推力作用于推板上，推动推板(压头)，使风叶逐渐套入轴上，在支板上装有限位柱，限位柱的长度刚好为风叶装到位时抵住推板(具体长度在加工前通过计算电机长度、工装板厚、风叶装入后相对转轴位置等相互关系算出)，由于装配加工 上的误差，限位柱有效长度不可能一次性的加工到刚好需要的长度，因此限位柱在支板上可通过螺纹安装，通过螺纹旋入旋出，进行限位长度上的微调。因此，推板(压头)在外界推力的作用于，推动风叶套入转轴，当推板接触到限位柱时，即为风叶安装到位。The motor is placed in the tooling, the motor shaft is pressed against the projecting block on the tooling, and the pushing plate on the tooling can be parallelly slid through the sliding groove of the bottom plate. When the wind blade is pressed, the pressing head on the pushing plate bears against the end face of the blade, and the external thrust Acting on the push plate, pushing the push plate (indenter), so that the wind blade gradually fits on the shaft, and the limit plate is mounted on the support plate. The length of the limit column is just against the push plate when the wind blade is in place (specific length Before calculating, by calculating the relationship between the length of the motor, the thickness of the tooling plate, and the relative position of the rotating shaft after the blade is loaded, the effective length of the limiting column cannot be processed to the length just needed due to the error in the assembly process. Therefore, the limit post can be screwed on the support plate, and the screw can be screwed in and out to perform fine adjustment on the limit length. Therefore, the push plate (indenter) acts on the external thrust to push the wind blade into the rotating shaft, and when the push plate contacts the limit post, the wind blade is installed in place.
方法二：Method Two:
同上工装台架，区别在于取消限位柱，通过支板上的顶压块限位，顶压块上的沉台深度，设计为与风叶装到位后的轴伸出长度尺寸相同，即外界推力推动推板(压头)，使风叶逐渐套入轴上，当风叶侧的轴伸出风叶端面与顶压的沉台面相抵时，即为风叶安装到位，区别于方便一的限位柱限位，方法二无法目视，外界的推力设定为一恒定力，在此推力下，推板无法位移时，即风叶侧的轴端已抵住顶压块的沉台面。表明装配到位。The same as the upper tooling stand, the difference is that the limit column is cancelled, and the top pressing block on the support plate is limited, and the depth of the sinking table on the top pressing block is designed to be the same as the protruding length of the shaft after the wind blade is in place, that is, the outside The thrust pushes the push plate (indenter) so that the wind blade gradually fits into the shaft. When the shaft on the side of the wind blade protrudes from the end surface of the wind blade and the countersunk surface of the top pressure, the wind blade is installed in place, which is different from the convenience. The limit position of the limit column is not visible in the second method. The external thrust is set to a constant force. Under this thrust, when the push plate cannot be displaced, the axial end of the wind blade side has already resisted the countersunk surface of the top press block. Indicates that the assembly is in place.
另外，风叶内壁的凸台面也是可以限位的，风叶内凸台面(即台肩面312)与轴肩(即转轴台肩11)相抵，即表明已装配到位，但此结构限位作用不易与风叶有外凸台结构(图7a-7c风叶)同时使用，会产生过定位。In addition, the convex surface of the inner wall of the blade can also be limited, and the convex surface of the blade (ie, the shoulder surface 312) abuts the shoulder (ie, the shoulder 11 of the shaft), that is, it has been assembled, but the structure is limited. It is not easy to use at the same time as the outer leaf structure of the fan blade (Fig. 7a-7c), and over-positioning will occur.
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明技术原理的前提下，还可以做出若干改进和变型，这些改进和变型也应视为本发明的保护范围。The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. Within the scope. The above is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make several improvements and modifications without departing from the technical principles of the present invention. It should also be considered as the scope of protection of the present invention.

Claims (12)

  1. 一种电机密封结构，其特征在于：包括：A motor sealing structure, comprising:
    转轴(1)；Rotary shaft (1);
    轴承(2)，套设在所述转轴(1)上，且在所述转轴(1)的外周壁上、与所述轴承(2)相对应的位置沿所述沿转轴轴向还开设有轴肩结构，使得所述轴承(2)的部分与所述轴肩结构之间形成容腔(4)；a bearing (2) is sleeved on the rotating shaft (1), and is further disposed on the outer peripheral wall of the rotating shaft (1) at a position corresponding to the bearing (2) along the axial direction of the rotating shaft a shoulder structure, such that a portion of the bearing (2) and the shoulder structure form a cavity (4);
    风叶结构(3)，套设在所述转轴(1)的一端，并沿转轴(1)轴线方向延伸至所述轴承(2)的位置，且进入所述容腔(4)中。The blade structure (3) is sleeved at one end of the rotating shaft (1) and extends in the axial direction of the rotating shaft (1) to the position of the bearing (2) and enters the cavity (4).
  2. 根据权利要求1所述的密封结构，其特征在于：The sealing structure according to claim 1 wherein:
    所述风叶结构(3)卡设进入所述轴承(2)与所述转轴(1)之间的部分沿所述轴线方向的长度为1.5mm-5.0mm。The length of the portion of the blade structure (3) that is inserted between the bearing (2) and the rotating shaft (1) in the axial direction is 1.5 mm to 5.0 mm.
  3. 根据权利要求1-2中任一项所述的密封结构，其特征在于：A sealing structure according to any one of claims 1 to 2, wherein:
    所述风叶结构(3)包括风叶凸台(31)和叶片(32)，所述风叶凸台(31)包括风叶凸台孔(310)、所述风叶凸台(31)通过所述风叶凸台孔(310)套设在所述转轴(1)的一端部，所述风叶凸台(31)能被所述转轴(1)带动而进行转动。The blade structure (3) includes a blade boss (31) and a blade (32), the blade boss (31) includes a blade boss hole (310), and the blade boss (31) The blade boss hole (310) is sleeved on one end of the rotating shaft (1), and the blade boss (31) can be rotated by the rotating shaft (1).
  4. 根据权利要求3所述的密封结构，其特征在于：The sealing structure according to claim 3, wherein:
    所述转轴(1)的外周上设置有第一扁位结构，所述风叶凸台孔(310)的内壁上设置有能与所述转轴(1)的所述第一扁位结构相匹配的第二扁位结构(311)。a first flat structure is disposed on an outer circumference of the rotating shaft (1), and an inner wall of the air vane hole (310) is disposed to be matched with the first flat structure of the rotating shaft (1) The second flat structure (311).
  5. 根据权利要求3所述的密封结构，其特征在于：The sealing structure according to claim 3, wherein:
    所述风叶凸台孔(310)的内壁还设置有沿所述轴线方向延伸的台肩面(312)，所述转轴(1)外周面上与之相对应的位置设置有台肩(11)，所述台肩面(312)与所述台肩(11)能够相互匹配相接以完成转轴(1)和风叶凸台(31)之间的轴向定位。The inner wall of the vane boss hole (310) is further provided with a shoulder surface (312) extending in the axial direction, and a shoulder corresponding to the outer peripheral surface of the rotating shaft (1) is provided with a shoulder (11) The shoulder surface (312) and the shoulder (11) can be mated to each other to complete axial positioning between the rotating shaft (1) and the vane boss (31).
  6. 根据权利要求3所述的密封结构，其特征在于：The sealing structure according to claim 3, wherein:
    在所述风叶凸台(31)的端部外周面上还设置有台阶(313)，所述台阶(313)能够***所述容腔(4)中、与所述轴承(2)之间完成轴向限位。A step (313) is further disposed on an outer peripheral surface of the end of the vane boss (31), the step (313) being insertable into the cavity (4) and between the bearing (2) Complete the axial limit.
  7. 根据权利要求3所述的密封结构，其特征在于：The sealing structure according to claim 3, wherein:
    所述风叶结构(3)还包括轮盘(33)，所述轮盘(33)连接设置在所述风叶凸台(31)的径向外侧，多个所述叶片(32)设置在所述轮盘(33)上、且沿其周向方向进行排布。The blade structure (3) further includes a wheel (33) connected to a radially outer side of the blade boss (31), and a plurality of the blades (32) are disposed at The wheel (33) is arranged on and in a circumferential direction thereof.
  8. 根据权利要求7所述的密封结构，其特征在于：The sealing structure according to claim 7, wherein:
    在所述轮盘(33)上还设置有加强筋(5)，所述加强筋(5)的一端与所述风叶凸台(31)的外周面固定连接。A reinforcing rib (5) is further disposed on the wheel (33), and one end of the reinforcing rib (5) is fixedly connected to an outer peripheral surface of the blade boss (31).
  9. 根据权利要求8所述的密封结构，其特征在于：The sealing structure according to claim 8 wherein:
    所述加强筋(5)为多个、其数量与所述叶片数量相对应，且沿所述轮盘(33)的周向方向进行排布。The reinforcing ribs (5) are plural, the number of which corresponds to the number of the blades, and are arranged along the circumferential direction of the wheel (33).
  10. 根据权利要求3所述的密封结构，其特征在于：The sealing structure according to claim 3, wherein:
    还包括端盖(6)，所述端盖(6)包括在所述轴线方向相接的第一部分和第二部分，第一部分套设在所述轴承(2)的径向外侧、第二部分位于所述转轴(1)的径向外侧，所述风叶结构(3)的所述风叶凸台(31)***所述端盖(6)的所述第二部分的径向内侧和所述转轴(1)的径向外侧之间的位置。Also included is an end cap (6) including a first portion and a second portion that meet in the axial direction, the first portion being sleeved radially outward of the bearing (2), the second portion Located radially outward of the rotating shaft (1), the vane boss (31) of the vane structure (3) is inserted radially inward of the second portion of the end cap (6) and The position between the radially outer sides of the rotating shaft (1).
  11. 根据权利要求10所述的密封结构，其特征在于：The sealing structure according to claim 10, wherein:
    当包括风叶凸台孔(310)时，所述风叶凸台孔(310)的内壁与转轴(1)的外周壁之间为过盈配合；When the blade boss hole (310) is included, an inner fit between the inner wall of the blade boss hole (310) and the outer peripheral wall of the rotating shaft (1) is an interference fit;
    和/或，当包括风叶凸台(31)时，所述轴承(2)包括轴承内圈和轴承外圈，且所述风叶凸台(31)与轴承内圈之间为过盈配合，And/or, when the blade boss (31) is included, the bearing (2) includes a bearing inner ring and a bearing outer ring, and an interference fit between the blade boss (31) and the bearing inner ring ,
    和/或，所述轴承(2)包括轴承内圈和轴承外圈，所述轴承外圈与端盖的所述第一部分之间为过盈配合；And/or, the bearing (2) includes a bearing inner ring and a bearing outer ring, and an interference fit between the bearing outer ring and the first portion of the end cap;
    和/或，所述轴轴承(2)包括轴承内圈和轴承外圈，所述轴承内圈与转轴之间为过渡配合或间隙配合；And/or, the shaft bearing (2) includes a bearing inner ring and a bearing outer ring, and the bearing inner ring and the rotating shaft are a transition fit or a clearance fit;
    和/或，所述轴承(2)为防水轴承；And/or, the bearing (2) is a waterproof bearing;
    和/或，所述风叶结构(3)的材质为塑料材质。And/or, the material of the blade structure (3) is made of plastic material.
  12. 一种电机，包括转子、定子，其特征在于：还包括权利要求1-11中任一项所述的电机密封结构。An electric machine comprising a rotor and a stator, characterized by further comprising the motor sealing structure according to any one of claims 1-11.
PCT/CN2018/112309 2017-11-17 2018-10-29 Motor sealing structure and motor WO2019095981A1 (en)

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